docs: def blit(self, image, x, y):
          """blit to the image array"""
          # adjust the position with the local bbox
          x += self.font_bbox[2] - self.bbox[2]
          y += self.font_bbox[3] - self.bbox[3]
          x += self.font_bbox[0] - self.bbox[0]
          y += self.font_bbox[1] - self.bbox[1]
          image[y:y+self.height, x:x+self.width] = self.bitmap * 255